# Copyright (c) 2022 Project CHIP Authors
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

import enum
import importlib

from matter.idl.generators.cpp.application import CppApplicationGenerator
from matter.idl.generators.cpp.sdk import SdkGenerator
from matter.idl.generators.cpp.tlvmeta import TLVMetaDataGenerator
from matter.idl.generators.idl import IdlGenerator
from matter.idl.generators.java import JavaClassGenerator, JavaJNIGenerator
from matter.idl.generators.kotlin import KotlinClassGenerator
from matter.idl.generators.markdown import SummaryMarkdownGenerator


class CodeGenerator(enum.Enum):
    """
    Represents every generator type supported by codegen and maps
    the simple enum value (user friendly and can be a command line input)
    into underlying generators.
    """
    JAVA_JNI = enum.auto()
    JAVA_CLASS = enum.auto()
    KOTLIN_CLASS = enum.auto()
    CPP_APPLICATION = enum.auto()
    CPP_TLVMETA = enum.auto()
    CPP_SDK = enum.auto()
    IDL = enum.auto()
    SUMMARY_MARKDOWN = enum.auto()
    CUSTOM = enum.auto()

    def Create(self, *args, **kargs):
        if self == CodeGenerator.JAVA_JNI:
            return JavaJNIGenerator(*args, **kargs)
        if self == CodeGenerator.JAVA_CLASS:
            return JavaClassGenerator(*args, **kargs)
        if self == CodeGenerator.KOTLIN_CLASS:
            return KotlinClassGenerator(*args, **kargs)
        if self == CodeGenerator.CPP_APPLICATION:
            return CppApplicationGenerator(*args, **kargs)
        if self == CodeGenerator.CPP_TLVMETA:
            return TLVMetaDataGenerator(*args, **kargs)
        if self == CodeGenerator.CPP_SDK:
            return SdkGenerator(*args, **kargs)
        if self == CodeGenerator.IDL:
            return IdlGenerator(*args, **kargs)
        if self == CodeGenerator.SUMMARY_MARKDOWN:
            return SummaryMarkdownGenerator(*args, **kargs)
        if self == CodeGenerator.CUSTOM:
            # Use a package naming convention to find the custom generator:
            # ./matter_idl_plugin/__init__.py defines a subclass of CodeGenerator named CustomGenerator.
            # The plugin is expected to be in the path provided via the `--plugin <path>` cli argument.
            # Replaces `from plugin_module import CustomGenerator``
            plugin_module = importlib.import_module(kargs['plugin_module'])
            CustomGenerator = plugin_module.CustomGenerator
            return CustomGenerator(*args, **kargs)
        raise NameError("Unknown code generator type")

    @staticmethod
    def FromString(name):
        global GENERATORS

        if name.lower() in GENERATORS:
            return GENERATORS[name.lower()]
        raise NameError("Unknown code generator type '%s'" % name)


# Contains all known code generators along with a string
# to uniquely identify them when running command line tools or
# executing tests
GENERATORS = {
    'java-jni': CodeGenerator.JAVA_JNI,
    'java-class': CodeGenerator.JAVA_CLASS,
    'kotlin-class': CodeGenerator.KOTLIN_CLASS,
    'cpp-app': CodeGenerator.CPP_APPLICATION,
    'cpp-tlvmeta': CodeGenerator.CPP_TLVMETA,
    'cpp-sdk': CodeGenerator.CPP_SDK,
    'idl': CodeGenerator.IDL,
    'summary-markdown': CodeGenerator.SUMMARY_MARKDOWN,
    'custom': CodeGenerator.CUSTOM,
}
